CN103553659B - Knotting method of straight cylindrical furnace lining for ferrovanadium smelting - Google Patents
Knotting method of straight cylindrical furnace lining for ferrovanadium smelting Download PDFInfo
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- CN103553659B CN103553659B CN201310482056.0A CN201310482056A CN103553659B CN 103553659 B CN103553659 B CN 103553659B CN 201310482056 A CN201310482056 A CN 201310482056A CN 103553659 B CN103553659 B CN 103553659B
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Abstract
The invention discloses a knotting method of a straight cylindrical furnace lining for ferrovanadium smelting. The knotting method comprises the following steps of building the furnace lining at the bottom of a straight cylinder furnace through magnesia carbon bricks; transferring into a crucible die; adding knotting materials in batch; ramming for 10 to 15min at pressure of 5 to 15MPa after adding every 50 to 100Kg of knotting materials until the knotting materials are compacted and form a furnace lining wall; and baking for 24 hours under a temperature of 500 to 800 DEG C after knotting, in order to form the furnace lining, wherein the knotting materials are prepared by uniformly mixing the following materials in percentage by weight: 75 to 85% of magnesite, 10 to 20% of corundum slag, 3 to 5% of MgCl2 and 2 to 5% of water. Compared with the existing production method, the knotting method has the advantages that the corundum slag and magnesite are adopted as the raw materials, so that the knotting cost of the furnace lining can be decreased, and as a result, the smelting cost of ferrovanadium can be decreased; the knotting method has the characteristics of low cost and high resource utilization rate, can effectively decrease the dose of magnesite, and also can increase the enterprise benefit.
Description
Technical field
The invention belongs to ferro-vanadium technical field of smelting, more particularly, relate to a kind of knotting method of ferro-vanadium smelting straight tube stove furnace lining.
Background technology
Ferro-vanadium is important steel-smelting alloy additive, usually adopts V
2o
5electro-silicothermic process smelting technology, the mature production technology of this method, equipment is advanced, constant product quality, and the external vanadium recovery adopting electro-silicothermic process is more than 95%, domestic employing V
2o
5the vanadium iron quality product of electro-silicothermic process explained hereafter and vanadium recovery and Foreign Advanced Lerel still have certain gap.
In addition, also have many enterprises to adopt electro-aluminothermic process to prepare ferro-vanadium both at home and abroad, its tap to tap time is short compared with electro-silicothermic process, and the working of a furnace easily controls, and labor strength is low, constant product quality, and environmental pollution is little, and comprehensive cost is low.Generally by V
2o
3or V
2o
5and the material such as abrasive grit, aluminium powder loads in electric furnace, electrified regulation promotes that reaction is carried out and obtains ferro-vanadium and slag.Smelting high vanadium ferroalloy by electro-aluminothermic process can make the rate of recovery of vanadium also can reach more than 95%, in order to reach higher technico-economical comparison, each vanadium iron manufacturer has done again further technological improvement, the CASA factory of such as Luxembourg and climb steel North Sea special iron alloy company limited and just add a set of blowing device on the basis of electro-aluminothermic process, make the residual vanadium in slag be reduced to less than 1.2% from 2% by this equipment, thus make the rate of recovery of vanadium bring up to more than 97%.
Smelting vanadium ferro-alloy by electro-aluminothermic process can adopt stove of tumbling also can adopt straight tube stove, and stove of tumbling is for building formula furnace lining by laying bricks or stones, and straight tube stove is generally tamped lining, what tamped lining adopted is magnesia is raw material, and straight tube stove furnace lining is use once after once knotting, and not reproducible use, cost is higher.
Summary of the invention
The object of the present invention is to provide and a kind ofly reduce furnace lining knotting cost and reduce the straight tube stove furnace lining knotting method of ferro-vanadium smelting cost, to increase the performance of enterprises and resource utilization.
To achieve these goals, the invention provides a kind of knotting method of ferro-vanadium smelting straight tube stove furnace lining, described knotting method comprises the following steps: first adopt magnesia carbon brick masonry heater substrate at the furnace bottom of described straight tube stove, put into crucible die again, then add stamp mass in batches, the pressure ramming 10 ~ 15min of 5 ~ 15MPa is adopted after often adding 50 ~ 100Kg stamp mass, until ramming solid formation furnace lining wall, at the temperature of 500 ~ 800 DEG C, toast 24h after having tied a knot form furnace lining, wherein, by weight percentage, described stamp mass by 75 ~ 85% magnesia, the corundum slag of 10 ~ 20%, the MgCl of 3 ~ 5%
2water with 2 ~ 5% mixes to be made.
According to an embodiment of the knotting method of ferro-vanadium smelting straight tube stove furnace lining of the present invention, described corundum slag is the metallurgical slag of gained after ferro-vanadium is smelted, and wherein contains the Al of 60 ~ 75%
2o
3, the MgO of 15 ~ the 20% and CaO of 10 ~ 15%.
According to an embodiment of the knotting method of ferro-vanadium smelting straight tube stove furnace lining of the present invention, described corundum slag is crushed to below 5mm and uses.
According to an embodiment of the knotting method of ferro-vanadium smelting straight tube stove furnace lining of the present invention, the content of MgO >90% in described magnesia and granularity <5mm.
The present invention adopts corundum slag and magnesia to do raw material, reduce furnace lining knotting cost compared to existing production method, thus reduce the smelting cost of ferro-vanadium, have that cost is low, resource utilization high, can effectively reduce magnesia consumption, improve the performance of enterprises.
Embodiment
Hereinafter, the knotting method of ferro-vanadium smelting straight tube stove furnace lining of the present invention will be specifically described in conjunction with exemplary embodiment.
The knotting method of ferro-vanadium smelting straight tube stove furnace lining comprises the following steps according to an exemplary embodiment of the present invention:
First adopt magnesia carbon brick masonry heater substrate at the ferro-vanadium smelting furnace bottom of straight tube stove, put into crucible die again, then add stamp mass in batches, the pressure ramming 10 ~ 15min of 5 ~ 15MPa is adopted after often adding 50 ~ 100kg stamp mass, until ramming solid formation furnace lining wall, at the temperature of 500 ~ 800 DEG C, toast 24h after having tied a knot form furnace lining, the object of baking discharges the moisture in furnace lining, makes it at high temperature sinter the tight zone with high strength into.
Wherein, by weight percentage, above-mentioned stamp mass by 75 ~ 85% magnesia, the corundum slag of 10 ~ 20%, the MgCl of 3 ~ 5%
2water with 2 ~ 5% mixes to be made.Wherein, magnesia is selected mainly to utilize its high temperature resistant, erosion-resistant effect as major ingredient.Select corundum slag to be then because its fusing point is higher and can join in stamp mass, but because of content of MgO wherein low, simultaneously close with the slag composition of smelting, therefore consumption may not exceed 20%.Wherein, magnesium chloride is used as bonding agent.
Corundum slag is the metallurgical slag of gained after ferro-vanadium is smelted, and wherein contains the Al of 60 ~ 75%
2o
3, the MgO of 15 ~ the 20% and CaO of 10 ~ 15%.Preferably, corundum slag is crushed to below 5mm and uses, to improve the mixed effect of stamp mass and the degree of compactness after tiing a knot.Magnesia is the conventional magnesia of smelter, content of MgO >90% wherein and granularity <5mm, equally with the degree of compactness after increasing operation rate and tiing a knot.Adopting corundum slag as one of raw material of stamp mass, except mainly utilizing the characteristic that its fusing point is high, also for the consideration that cost consideration and waste resource utilize, being conducive to reducing production cost and improving resource utilization.
Below in conjunction with concrete example, the specific embodiment of the present invention is further described, does not therefore limit the present invention among described example ranges.Further, unless otherwise noted, the per-cent related in this specification sheets is all weight percentage.
Example 1:
By the magnesia of 75%, the corundum slag of 15%, the MgCl of 5%
2, 5% water carry out Homogeneous phase mixing, after batch mixing is finished, first adopt magnesia carbon brick masonry heater substrate at the furnace bottom of steel straight tube stove, again crucible die is put into, add mixed stamp mass in batches, adopt the pressure knotting 10min of 10MPa after often adding 50kg, form furnace lining wall until tied a knot, namely the temperature baking 24h of rear employing 500 ~ 800 DEG C of having tied a knot forms furnace lining.
Example 2:
By the magnesia of 85%, the corundum slag of 10%, the MgC of 3%
l2, 2% water carry out Homogeneous phase mixing, after batch mixing is finished, first adopt magnesia carbon brick masonry heater substrate at the furnace bottom of steel straight tube stove, again crucible die is put into, add mixed stamp mass in batches, adopt the pressure knotting 15min of 15MPa after often adding 100kg, form furnace lining wall until tied a knot, namely rear employing 500 ~ 800 DEG C of temperature baking 24h that tied a knot form furnace lining.
The present invention has that cost is low, resource utilization high, can effectively reduce magnesia consumption, improves the performance of enterprises.
Although specifically describe the present invention, those skilled in the art will appreciate that without departing from the spirit and scope of the present invention, various forms of change can be made to the present invention.
Claims (3)
1. the knotting method with straight tube stove furnace lining smelted by ferro-vanadium, and it is characterized in that, described knotting method comprises the following steps:
First adopt magnesia carbon brick masonry heater substrate at the furnace bottom of described straight tube stove, put into crucible die again, then add stamp mass in batches, the pressure ramming 10 ~ 15min of 5 ~ 15MPa is adopted after often adding 50 ~ 100Kg stamp mass, until ramming solid formation furnace lining wall, at the temperature of 500 ~ 800 DEG C, toast 24h after having tied a knot form furnace lining, wherein
By weight percentage, described stamp mass by 75 ~ 85% magnesia, the corundum slag of 10 ~ 20%, the MgCl of 3 ~ 5%
2water with 2 ~ 5% mixes to be made, and described corundum slag is that after ferro-vanadium is smelted, the metallurgical slag of gained and described corundum slag contain the Al of 60 ~ 75%
2o
3, the MgO of 15 ~ the 20% and CaO of 10 ~ 15%.
2. the knotting method of ferro-vanadium smelting straight tube stove furnace lining according to claim 1, is characterized in that, described corundum slag is crushed to below 5mm and uses.
3. the knotting method of ferro-vanadium smelting straight tube stove furnace lining according to claim 1, is characterized in that, the content of MgO >90% in described magnesia and granularity <5mm.
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| CN201310482056.0A CN103553659B (en) | 2013-10-15 | 2013-10-15 | Knotting method of straight cylindrical furnace lining for ferrovanadium smelting |
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| CN201310482056.0A CN103553659B (en) | 2013-10-15 | 2013-10-15 | Knotting method of straight cylindrical furnace lining for ferrovanadium smelting |
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| CN103553659B true CN103553659B (en) | 2014-12-17 |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104557085B (en) * | 2014-12-30 | 2016-08-17 | 武钢集团昆明钢铁股份有限公司 | A kind of 200kg Experiment Coke Oven builds material and application thereof by laying bricks or stones |
| CN104876594A (en) * | 2015-04-15 | 2015-09-02 | 张燕 | Corundum slag-thermal power plant flyash refractory castable |
| CN105174976B (en) * | 2015-08-05 | 2018-03-20 | 攀钢集团攀枝花钢钒有限公司 | Vanadium iron smelts the casting method with straight tube stove furnace lining |
| CN105149530B (en) * | 2015-08-20 | 2017-07-07 | 攀钢集团西昌钢钒有限公司 | The knotting method of vanadium iron ingot mould |
| CN105924192A (en) * | 2016-04-28 | 2016-09-07 | 河北钢铁股份有限公司承德分公司 | Method for lining ramming through vanadium-aluminum slag |
| CN105903915A (en) * | 2016-05-16 | 2016-08-31 | 攀钢集团攀枝花钢铁研究院有限公司 | Knotting method of casting ingot mold in preparation process of vanadium-iron alloy |
| CN106052400B (en) * | 2016-05-31 | 2019-01-29 | 河北钢铁股份有限公司承德分公司 | Smelt the knotting method of vanadium aluminium furnace body |
| CN107287450A (en) * | 2017-06-12 | 2017-10-24 | 河钢股份有限公司承德分公司 | The method that vanadium aluminium clinker is efficiently utilized |
| CN108455973B (en) * | 2017-12-27 | 2022-09-06 | 中色（宁夏）东方集团有限公司 | Method for manufacturing straight cylinder furnace lining for smelting ferrovanadium |
| CN109320217A (en) * | 2018-12-03 | 2019-02-12 | 湖南立达高新材料有限公司 | A kind of intermediate frequency furnace corundum dry type ramming material and preparation method thereof |
| CN113200736B (en) * | 2021-04-20 | 2022-05-24 | 攀钢集团攀枝花钢铁研究院有限公司 | Furnace lining of ferrovanadium smelting furnace and preparation method thereof |
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| CN102134165B (en) * | 2011-03-03 | 2013-04-10 | 江西鑫盛稀有金属有限公司 | Furnace lining of ferrovanadium smelting furnace and preparation method thereof |
| CN102269522B (en) * | 2011-06-28 | 2013-04-24 | 南京钢铁股份有限公司 | Building process of furnace bottom of electric furnace |
| CN102788510B (en) * | 2012-08-21 | 2015-01-14 | 江西稀有稀土金属钨业集团有限公司 | Method for constructing vacuum induction melting furnace |
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